Question: In Problem S8-15 how confident can Northwoods Backpackers be in the standard time it computed if it assumed that the proportion of time that an

In Problem S8-15 how confident can Northwoods Backpackers be in the standard time it computed if it assumed that the proportion of time that an operator is busy determined from the work sampling study is accurate within ±4%? How many additional observations might be needed for Northwoods to be 95% confident in the standard time per customer call?

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